I confused can any body help me please...

A

Step-by-step explanation:

y=7x

y=7(2)

y=14

y=7(4)

y=28

14 and 28

Step-by-step explanation:

2 x 7 = 14

and 4 x 7 = 28

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.